<template>
  <el-card>
    <!--卡片头部 -->
    <div slot="header"
         class="clearfix">
      <!-- 面包屑内容 -->
      <el-breadcrumb separator="/">
        <el-breadcrumb-item to="/home"><i class="el-icon-house"></i>首页</el-breadcrumb-item>
        <el-breadcrumb-item to="/home/users">用户列表</el-breadcrumb-item>
      </el-breadcrumb>
    </div>
    <!-- 主体内容 -->
    <!-- 搜索与添加区域 -->
    <el-row :gutter="20">
      <el-col :span="8">
        <el-input placeholder="请输入内容"
                  clearable
                  v-model="queryInfo.query"
                  @clear="getUserList">
          <el-button icon="el-icon-search"
                     slot="append"
                     @click="getUserList">
          </el-button>
        </el-input>
      </el-col>
      <el-col :offset="12"
              :span="4">
        <el-button type="primary"
                   @click="addDialogVisible = true">添加用户</el-button>
      </el-col>
    </el-row>
    <!-- 用户列表 -->
    <!-- data 表格数据 -->
    <el-table :data="userlist"
              border
              stripe>
      <!-- 索引页 -->
      <el-table-column type="index"></el-table-column>
      <!-- label 文字， prop 显示字段 -->
      <el-table-column prop="username"
                       label="姓名">
      </el-table-column>
      <el-table-column prop="email"
                       label="邮箱">
      </el-table-column>
      <el-table-column prop="mobile"
                       label="电话">
      </el-table-column>
      <el-table-column prop="role_name"
                       label="角色">
      </el-table-column>
      <!-- 自定义列表,通过自定义插槽 -->
      <el-table-column label="状态">
        <!-- 默认插槽,作用域插槽  scope是组件暴露出来的数据-->
        <template slot-scope="scope">
          <!-- scope.row 表示这一行的数据 -->
          <el-switch v-model="scope.row.mg_state"
                     @change="
                     useStateChangeed(scope.row)">
          </el-switch>
        </template>
      </el-table-column>
      <el-table-column label="操作"
                       width="180px">
        <template slot-scope="scope">
          <!-- 修改按钮 -->
          <el-button type="primary"
                     icon="el-icon-edit"
                     size="mini"
                     @click="editUserHanlder(scope.row.id)">
          </el-button>
          <!-- 删除按钮 -->
          <el-button type="danger"
                     icon="el-icon-delete"
                     size="mini"
                     @click="removeUserById(scope.row.id)">
          </el-button>
          <!-- 分类角色按钮 -->
          <el-tooltip effect="dark"
                      content="分配角色"
                      placement="top"
                      :enterable="false">
            <el-button type="warning"
                       icon="el-icon-setting"
                       size="mini"
                       @click="setRole(scope.row)">
            </el-button>
          </el-tooltip>
        </template>
      </el-table-column>
    </el-table>
    <!-- 分页区域 -->
    <el-pagination @size-change="handleSizeChange"
                   @current-change="handleCurrentChange"
                   :current-page="queryInfo.pagenum"
                   :page-sizes="[1, 2, 5, 10]"
                   :page-size="queryInfo.pagesize"
                   layout="total, sizes, prev, pager, next, jumper"
                   :total="total">
    </el-pagination>

    <!-- 添加用户对话框 -->
    <el-dialog title="添加用户"
               :visible.sync="addDialogVisible"
               width="50%"
               @close="addDialogClosed">
      <!-- 主体内容 -->
      <el-form :model="addForm"
               :rules="addFormRules"
               ref="addFormRef"
               label-width="70px">
        <el-form-item label="用户名"
                      prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码"
                      prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱"
                      prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机"
                      prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消
        </el-button>
        <el-button type="primary"
                   @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog title="添加用户"
               :visible.sync="editDialogVisible"
               width="50%"
               @close="editDialogClosed">
      <el-form :model="editForm"
               :rules="editFormRules"
               ref="editFormRef"
               label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username"
                    disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱"
                      prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机"
                      prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog title="分配角色"
               :visible.sync="setRoleDialogVisible"
               width="50%"
               @close="selectedRoleId=''">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>当前新角色：
          <el-select v-model="selectedRoleId"
                     placeholder="请选择">
            <el-option v-for="item in rolesList"
                       :key="item.id"
                       :label="item.roleName"
                       :value="item.id">

            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </el-card>
</template>

<script>
// 验证邮箱的规则
var checkEmail = (rule, value, cb) => {
  // 验证邮箱的正则表达式
  const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

  if (regEmail.test(value)) {
    // 合法的邮箱
    return cb()
  }

  cb(new Error('请输入合法的邮箱'))
}

// 验证手机号的规则
var checkMobile = (rule, value, cb) => {
  // 验证手机号的正则表达式
  const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

  if (regMobile.test(value)) {
    return cb()
  }

  cb(new Error('请输入合法的手机号'))
}

export default {
  name: 'user',

  data () {
    return {
      // 用户列表参数
      queryInfo: {
        query: '',
        // 页数
        pagenum: 1,
        // 每页数据
        pagesize: 2
      },
      // 列表总数
      userlist: [],
      // 总数
      total: 0,
      // 控制添加用户弹框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的 表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 提交表单验证规则
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 16, message: '长度在 6 到 16 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制编辑用户弹框的显示与隐藏
      editDialogVisible: false,
      // 要修改的数据
      editForm: {},
      // 修改表单的验证规则
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色弹框的显示与隐藏
      setRoleDialogVisible: false,
      // 分配角色用户信息
      userInfo: {},
      // 所有角色数据
      rolesList: [],
      // 已选角色id
      selectedRoleId: ''
    }
  },
  // 调用方法
  created () {
    this.getUserList()
  },
  methods: {
    // 渲染页面
    async getUserList () {
      // 发送请求
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      // 错误处理
      if (res.meta.status !== 200) return this.$message.error('用户用户列表失败')
      // 成功处理
      this.userlist = res.data.users
      this.total = res.data.total
      // 成功之后要去看输出内容,确保输出正确
      console.log(res)
    },
    // 监听 pagesize 改变的事件
    handleSizeChange (newSize) {
      // console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 pagenum（页码值） 改变的事件
    handleCurrentChange (newPage) {
      // console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 添加表单对话框关闭事件
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 添加用户
    addUser () {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          return this.$message.error(res.meta.msg)
        }
        this.$message.success(res.meta.msg)
        this.addDialogVisible = false
        this.getUserList()
      })
    },
    // 监听 switch 开关状态的改变
    async useStateChangeed (userinfo) {
      const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state // 失败了就要改回去
        return this.$message.error('更新用户状态失败！')
      }
      this.$message.success('更新用户状态成功！')
    },
    async editUserHanlder (id) {
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败！')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 修改用户信息提交事件
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.put('users/' + this.editForm.id,
          {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('修改信息失败')
        }
        this.$message.success('修改信息成功')
        this.editDialogVisible = false
        this.getUserList()
      })
    },
    // 修改用户对话框关闭事件
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 根据id删除用户信息
    async removeUserById (id) {
      // 弹出询问框
      try {
        await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        })
        // 确认删除
        // 发请求
        const { data: res } = await this.$http.delete('users/' + id)
        // 错误处理
        if (res.meta.status !== 200) {
          return this.$message.error('删除用户失败')
        }
        this.$message.success('删除用户成功')
        // 判断是否是每页最后一条数据和第一页
        if (this.userlist.length === 1 && this.queryInfo.pagenum !== 1) {
          this.queryInfo.pagenum--
        }
        this.getUserList()
      } catch (e) {
        this.$message.info('已取消删除')
      }
    },
    // 展示分配角色的对话框
    async setRole (userInfo) {
      this.userInfo = userInfo

      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) return this.$message.error('获取角色列表失败')
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击按钮分配角色
    async saveRoleInfo () {
      if (!this.selectedRoleId) return this.$message.error('请选择要分配的角色')
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status !== 200) return this.$message.error('更新角色失败')

      this.$message.success('更新角色成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    }

  }
}
</script>

<style>

</style>
